When sticky navigation is enabled and the page contains a table with sticky-header, then when scrolling down the table's sticky header is no more visible because it is under the navigation div. This seems a normal behavior as core /misc/tableheader.js set a top:0px to the table's header. What we need is override the top:0px with top:{equal to navigation-div.height} when navigation becomes sticky.
I've seen some posts taking example on admin's toolbar (core modules/toolbar/toolbar.js) which sets Drupal.settings.tableHeaderOffset to Drupal.toolbar.height function then used by tableheader.js like this
// Reset top position of sticky table headers to the current top offset.
this.stickyOffsetTop = Drupal.settings.tableHeaderOffset ? eval(Drupal.settings.tableHeaderOffset + '()') : 0;
this.stickyTable.css('top', this.stickyOffsetTop + 'px');I didn't manage to make it work but anyway we need something similar in stickynav so the sticky-header of tables stops scrolling under the navigation div and not at the top of screen.
Needs review
1.4
Code
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
This issue is still relevant for versions 8.x - 1.4. I'll take care of it and change the version to the most current one.
If the page already has any elements with position: fixed, then our stickynav will be placed below it. We also took into account the admin menu